weston/libweston/backend-x11/x11.c
Pekka Paalanen 192ce0ae0b gl-renderer: remove platform_attribs
No caller ever used anything but NULL here, so just use NULL to simplify code.

In fact, no EGL platform defined today even defines any platform attributes
except the X11 platform for choosing a non-default SCREEN.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2019-10-01 09:17:10 +00:00

1955 lines
51 KiB
C

/*
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2010-2011 Intel Corporation
* Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/shm.h>
#include <linux/input.h>
#include <xcb/xcb.h>
#include <xcb/shm.h>
#ifdef HAVE_XCB_XKB
#include <xcb/xkb.h>
#endif
#include <X11/Xlib.h>
#include <X11/Xlib-xcb.h>
#include <xkbcommon/xkbcommon.h>
#include <libweston/libweston.h>
#include <libweston/backend-x11.h>
#include "shared/helpers.h"
#include "shared/image-loader.h"
#include "shared/timespec-util.h"
#include "shared/file-util.h"
#include "renderer-gl/gl-renderer.h"
#include "weston-egl-ext.h"
#include "pixman-renderer.h"
#include "presentation-time-server-protocol.h"
#include "linux-dmabuf.h"
#include "linux-explicit-synchronization.h"
#include <libweston/windowed-output-api.h>
#define DEFAULT_AXIS_STEP_DISTANCE 10
#define WINDOW_MIN_WIDTH 128
#define WINDOW_MIN_HEIGHT 128
#define WINDOW_MAX_WIDTH 8192
#define WINDOW_MAX_HEIGHT 8192
struct x11_backend {
struct weston_backend base;
struct weston_compositor *compositor;
Display *dpy;
xcb_connection_t *conn;
xcb_screen_t *screen;
xcb_cursor_t null_cursor;
struct wl_array keys;
struct wl_event_source *xcb_source;
struct xkb_keymap *xkb_keymap;
unsigned int has_xkb;
uint8_t xkb_event_base;
int fullscreen;
int no_input;
int use_pixman;
int has_net_wm_state_fullscreen;
/* We could map multi-pointer X to multiple wayland seats, but
* for now we only support core X input. */
struct weston_seat core_seat;
double prev_x;
double prev_y;
struct {
xcb_atom_t wm_protocols;
xcb_atom_t wm_normal_hints;
xcb_atom_t wm_size_hints;
xcb_atom_t wm_delete_window;
xcb_atom_t wm_class;
xcb_atom_t net_wm_name;
xcb_atom_t net_supporting_wm_check;
xcb_atom_t net_supported;
xcb_atom_t net_wm_icon;
xcb_atom_t net_wm_state;
xcb_atom_t net_wm_state_fullscreen;
xcb_atom_t string;
xcb_atom_t utf8_string;
xcb_atom_t cardinal;
xcb_atom_t xkb_names;
} atom;
};
struct x11_head {
struct weston_head base;
};
struct x11_output {
struct weston_output base;
xcb_window_t window;
struct weston_mode mode;
struct weston_mode native;
struct wl_event_source *finish_frame_timer;
xcb_gc_t gc;
xcb_shm_seg_t segment;
pixman_image_t *hw_surface;
int shm_id;
void *buf;
uint8_t depth;
int32_t scale;
bool resize_pending;
bool window_resized;
};
struct window_delete_data {
struct x11_backend *backend;
xcb_window_t window;
};
struct gl_renderer_interface *gl_renderer;
static inline struct x11_head *
to_x11_head(struct weston_head *base)
{
return container_of(base, struct x11_head, base);
}
static inline struct x11_output *
to_x11_output(struct weston_output *base)
{
return container_of(base, struct x11_output, base);
}
static inline struct x11_backend *
to_x11_backend(struct weston_compositor *base)
{
return container_of(base->backend, struct x11_backend, base);
}
static xcb_screen_t *
x11_compositor_get_default_screen(struct x11_backend *b)
{
xcb_screen_iterator_t iter;
int i, screen_nbr = XDefaultScreen(b->dpy);
iter = xcb_setup_roots_iterator(xcb_get_setup(b->conn));
for (i = 0; iter.rem; xcb_screen_next(&iter), i++)
if (i == screen_nbr)
return iter.data;
return xcb_setup_roots_iterator(xcb_get_setup(b->conn)).data;
}
static struct xkb_keymap *
x11_backend_get_keymap(struct x11_backend *b)
{
xcb_get_property_cookie_t cookie;
xcb_get_property_reply_t *reply;
struct xkb_rule_names names;
struct xkb_keymap *ret;
const char *value_all, *value_part;
int length_all, length_part;
memset(&names, 0, sizeof(names));
cookie = xcb_get_property(b->conn, 0, b->screen->root,
b->atom.xkb_names, b->atom.string, 0, 1024);
reply = xcb_get_property_reply(b->conn, cookie, NULL);
if (reply == NULL)
return NULL;
value_all = xcb_get_property_value(reply);
length_all = xcb_get_property_value_length(reply);
value_part = value_all;
#define copy_prop_value(to) \
length_part = strlen(value_part); \
if (value_part + length_part < (value_all + length_all) && \
length_part > 0) \
names.to = value_part; \
value_part += length_part + 1;
copy_prop_value(rules);
copy_prop_value(model);
copy_prop_value(layout);
copy_prop_value(variant);
copy_prop_value(options);
#undef copy_prop_value
ret = xkb_keymap_new_from_names(b->compositor->xkb_context, &names, 0);
free(reply);
return ret;
}
static uint32_t
get_xkb_mod_mask(struct x11_backend *b, uint32_t in)
{
struct weston_keyboard *keyboard =
weston_seat_get_keyboard(&b->core_seat);
struct weston_xkb_info *info = keyboard->xkb_info;
uint32_t ret = 0;
if ((in & ShiftMask) && info->shift_mod != XKB_MOD_INVALID)
ret |= (1 << info->shift_mod);
if ((in & LockMask) && info->caps_mod != XKB_MOD_INVALID)
ret |= (1 << info->caps_mod);
if ((in & ControlMask) && info->ctrl_mod != XKB_MOD_INVALID)
ret |= (1 << info->ctrl_mod);
if ((in & Mod1Mask) && info->alt_mod != XKB_MOD_INVALID)
ret |= (1 << info->alt_mod);
if ((in & Mod2Mask) && info->mod2_mod != XKB_MOD_INVALID)
ret |= (1 << info->mod2_mod);
if ((in & Mod3Mask) && info->mod3_mod != XKB_MOD_INVALID)
ret |= (1 << info->mod3_mod);
if ((in & Mod4Mask) && info->super_mod != XKB_MOD_INVALID)
ret |= (1 << info->super_mod);
if ((in & Mod5Mask) && info->mod5_mod != XKB_MOD_INVALID)
ret |= (1 << info->mod5_mod);
return ret;
}
static void
x11_backend_setup_xkb(struct x11_backend *b)
{
#ifndef HAVE_XCB_XKB
weston_log("XCB-XKB not available during build\n");
b->has_xkb = 0;
b->xkb_event_base = 0;
return;
#else
struct weston_keyboard *keyboard;
const xcb_query_extension_reply_t *ext;
xcb_generic_error_t *error;
xcb_void_cookie_t select;
xcb_xkb_use_extension_cookie_t use_ext;
xcb_xkb_use_extension_reply_t *use_ext_reply;
xcb_xkb_per_client_flags_cookie_t pcf;
xcb_xkb_per_client_flags_reply_t *pcf_reply;
xcb_xkb_get_state_cookie_t state;
xcb_xkb_get_state_reply_t *state_reply;
uint32_t values[1] = { XCB_EVENT_MASK_PROPERTY_CHANGE };
b->has_xkb = 0;
b->xkb_event_base = 0;
ext = xcb_get_extension_data(b->conn, &xcb_xkb_id);
if (!ext) {
weston_log("XKB extension not available on host X11 server\n");
return;
}
b->xkb_event_base = ext->first_event;
select = xcb_xkb_select_events_checked(b->conn,
XCB_XKB_ID_USE_CORE_KBD,
XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
0,
XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
0,
0,
NULL);
error = xcb_request_check(b->conn, select);
if (error) {
weston_log("error: failed to select for XKB state events\n");
free(error);
return;
}
use_ext = xcb_xkb_use_extension(b->conn,
XCB_XKB_MAJOR_VERSION,
XCB_XKB_MINOR_VERSION);
use_ext_reply = xcb_xkb_use_extension_reply(b->conn, use_ext, NULL);
if (!use_ext_reply) {
weston_log("couldn't start using XKB extension\n");
return;
}
if (!use_ext_reply->supported) {
weston_log("XKB extension version on the server is too old "
"(want %d.%d, has %d.%d)\n",
XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION,
use_ext_reply->serverMajor, use_ext_reply->serverMinor);
free(use_ext_reply);
return;
}
free(use_ext_reply);
pcf = xcb_xkb_per_client_flags(b->conn,
XCB_XKB_ID_USE_CORE_KBD,
XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
0,
0,
0);
pcf_reply = xcb_xkb_per_client_flags_reply(b->conn, pcf, NULL);
if (!pcf_reply ||
!(pcf_reply->value & XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT)) {
weston_log("failed to set XKB per-client flags, not using "
"detectable repeat\n");
free(pcf_reply);
return;
}
free(pcf_reply);
state = xcb_xkb_get_state(b->conn, XCB_XKB_ID_USE_CORE_KBD);
state_reply = xcb_xkb_get_state_reply(b->conn, state, NULL);
if (!state_reply) {
weston_log("failed to get initial XKB state\n");
return;
}
keyboard = weston_seat_get_keyboard(&b->core_seat);
xkb_state_update_mask(keyboard->xkb_state.state,
get_xkb_mod_mask(b, state_reply->baseMods),
get_xkb_mod_mask(b, state_reply->latchedMods),
get_xkb_mod_mask(b, state_reply->lockedMods),
0,
0,
state_reply->group);
free(state_reply);
xcb_change_window_attributes(b->conn, b->screen->root,
XCB_CW_EVENT_MASK, values);
b->has_xkb = 1;
#endif
}
#ifdef HAVE_XCB_XKB
static void
update_xkb_keymap(struct x11_backend *b)
{
struct xkb_keymap *keymap;
keymap = x11_backend_get_keymap(b);
if (!keymap) {
weston_log("failed to get XKB keymap\n");
return;
}
weston_seat_update_keymap(&b->core_seat, keymap);
xkb_keymap_unref(keymap);
}
#endif
static int
x11_input_create(struct x11_backend *b, int no_input)
{
struct xkb_keymap *keymap;
weston_seat_init(&b->core_seat, b->compositor, "default");
if (no_input)
return 0;
weston_seat_init_pointer(&b->core_seat);
keymap = x11_backend_get_keymap(b);
if (weston_seat_init_keyboard(&b->core_seat, keymap) < 0)
return -1;
xkb_keymap_unref(keymap);
x11_backend_setup_xkb(b);
return 0;
}
static void
x11_input_destroy(struct x11_backend *b)
{
weston_seat_release(&b->core_seat);
}
static int
x11_output_start_repaint_loop(struct weston_output *output)
{
struct timespec ts;
weston_compositor_read_presentation_clock(output->compositor, &ts);
weston_output_finish_frame(output, &ts, WP_PRESENTATION_FEEDBACK_INVALID);
return 0;
}
static int
x11_output_repaint_gl(struct weston_output *output_base,
pixman_region32_t *damage,
void *repaint_data)
{
struct x11_output *output = to_x11_output(output_base);
struct weston_compositor *ec = output->base.compositor;
ec->renderer->repaint_output(output_base, damage);
pixman_region32_subtract(&ec->primary_plane.damage,
&ec->primary_plane.damage, damage);
wl_event_source_timer_update(output->finish_frame_timer, 10);
return 0;
}
static void
set_clip_for_output(struct weston_output *output_base, pixman_region32_t *region)
{
struct x11_output *output = to_x11_output(output_base);
struct weston_compositor *ec = output->base.compositor;
struct x11_backend *b = to_x11_backend(ec);
pixman_region32_t transformed_region;
pixman_box32_t *rects;
xcb_rectangle_t *output_rects;
xcb_void_cookie_t cookie;
int nrects, i;
xcb_generic_error_t *err;
pixman_region32_init(&transformed_region);
pixman_region32_copy(&transformed_region, region);
pixman_region32_translate(&transformed_region,
-output_base->x, -output_base->y);
weston_transformed_region(output_base->width, output_base->height,
output_base->transform,
output_base->current_scale,
&transformed_region, &transformed_region);
rects = pixman_region32_rectangles(&transformed_region, &nrects);
output_rects = calloc(nrects, sizeof(xcb_rectangle_t));
if (output_rects == NULL) {
pixman_region32_fini(&transformed_region);
return;
}
for (i = 0; i < nrects; i++) {
output_rects[i].x = rects[i].x1;
output_rects[i].y = rects[i].y1;
output_rects[i].width = rects[i].x2 - rects[i].x1;
output_rects[i].height = rects[i].y2 - rects[i].y1;
}
pixman_region32_fini(&transformed_region);
cookie = xcb_set_clip_rectangles_checked(b->conn, XCB_CLIP_ORDERING_UNSORTED,
output->gc,
0, 0, nrects,
output_rects);
err = xcb_request_check(b->conn, cookie);
if (err != NULL) {
weston_log("Failed to set clip rects, err: %d\n", err->error_code);
free(err);
}
free(output_rects);
}
static int
x11_output_repaint_shm(struct weston_output *output_base,
pixman_region32_t *damage,
void *repaint_data)
{
struct x11_output *output = to_x11_output(output_base);
struct weston_compositor *ec = output->base.compositor;
struct x11_backend *b = to_x11_backend(ec);
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
pixman_renderer_output_set_buffer(output_base, output->hw_surface);
ec->renderer->repaint_output(output_base, damage);
pixman_region32_subtract(&ec->primary_plane.damage,
&ec->primary_plane.damage, damage);
set_clip_for_output(output_base, damage);
cookie = xcb_shm_put_image_checked(b->conn, output->window, output->gc,
pixman_image_get_width(output->hw_surface),
pixman_image_get_height(output->hw_surface),
0, 0,
pixman_image_get_width(output->hw_surface),
pixman_image_get_height(output->hw_surface),
0, 0, output->depth, XCB_IMAGE_FORMAT_Z_PIXMAP,
0, output->segment, 0);
err = xcb_request_check(b->conn, cookie);
if (err != NULL) {
weston_log("Failed to put shm image, err: %d\n", err->error_code);
free(err);
}
wl_event_source_timer_update(output->finish_frame_timer, 10);
return 0;
}
static int
finish_frame_handler(void *data)
{
struct x11_output *output = data;
struct timespec ts;
weston_compositor_read_presentation_clock(output->base.compositor, &ts);
weston_output_finish_frame(&output->base, &ts, 0);
return 1;
}
static void
x11_output_deinit_shm(struct x11_backend *b, struct x11_output *output)
{
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
xcb_free_gc(b->conn, output->gc);
pixman_image_unref(output->hw_surface);
output->hw_surface = NULL;
cookie = xcb_shm_detach_checked(b->conn, output->segment);
err = xcb_request_check(b->conn, cookie);
if (err) {
weston_log("xcb_shm_detach failed, error %d\n", err->error_code);
free(err);
}
shmdt(output->buf);
}
static void
x11_output_set_wm_protocols(struct x11_backend *b,
struct x11_output *output)
{
xcb_atom_t list[1];
list[0] = b->atom.wm_delete_window;
xcb_change_property (b->conn,
XCB_PROP_MODE_REPLACE,
output->window,
b->atom.wm_protocols,
XCB_ATOM_ATOM,
32,
ARRAY_LENGTH(list),
list);
}
struct wm_normal_hints {
uint32_t flags;
uint32_t pad[4];
int32_t min_width, min_height;
int32_t max_width, max_height;
int32_t width_inc, height_inc;
int32_t min_aspect_x, min_aspect_y;
int32_t max_aspect_x, max_aspect_y;
int32_t base_width, base_height;
int32_t win_gravity;
};
#define WM_NORMAL_HINTS_MIN_SIZE 16
#define WM_NORMAL_HINTS_MAX_SIZE 32
static void
x11_output_set_icon(struct x11_backend *b,
struct x11_output *output, const char *filename)
{
uint32_t *icon;
int32_t width, height;
pixman_image_t *image;
image = load_image(filename);
if (!image)
return;
width = pixman_image_get_width(image);
height = pixman_image_get_height(image);
icon = malloc(width * height * 4 + 8);
if (!icon) {
pixman_image_unref(image);
return;
}
icon[0] = width;
icon[1] = height;
memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
xcb_change_property(b->conn, XCB_PROP_MODE_REPLACE, output->window,
b->atom.net_wm_icon, b->atom.cardinal, 32,
width * height + 2, icon);
free(icon);
pixman_image_unref(image);
}
static void
x11_output_wait_for_map(struct x11_backend *b, struct x11_output *output)
{
xcb_map_notify_event_t *map_notify;
xcb_configure_notify_event_t *configure_notify;
xcb_generic_event_t *event;
int mapped = 0, configured = 0;
uint8_t response_type;
/* This isn't the nicest way to do this. Ideally, we could
* just go back to the main loop and once we get the configure
* notify, we add the output to the compositor. While we do
* support output hotplug, we can't start up with no outputs.
* We could add the output and then resize once we get the
* configure notify, but we don't want to start up and
* immediately resize the output.
*
* Also, some window managers don't give us our final
* fullscreen size before map_notify, so if we don't get a
* configure_notify before map_notify, we just wait for the
* first one and hope that's our size. */
xcb_flush(b->conn);
while (!mapped || !configured) {
event = xcb_wait_for_event(b->conn);
response_type = event->response_type & ~0x80;
switch (response_type) {
case XCB_MAP_NOTIFY:
map_notify = (xcb_map_notify_event_t *) event;
if (map_notify->window == output->window)
mapped = 1;
break;
case XCB_CONFIGURE_NOTIFY:
configure_notify =
(xcb_configure_notify_event_t *) event;
if (configure_notify->width % output->scale != 0 ||
configure_notify->height % output->scale != 0)
weston_log("Resolution is not a multiple of screen size, rounding\n");
output->mode.width = configure_notify->width;
output->mode.height = configure_notify->height;
configured = 1;
break;
}
}
}
static xcb_visualtype_t *
find_visual_by_id(xcb_screen_t *screen,
xcb_visualid_t id)
{
xcb_depth_iterator_t i;
xcb_visualtype_iterator_t j;
for (i = xcb_screen_allowed_depths_iterator(screen);
i.rem;
xcb_depth_next(&i)) {
for (j = xcb_depth_visuals_iterator(i.data);
j.rem;
xcb_visualtype_next(&j)) {
if (j.data->visual_id == id)
return j.data;
}
}
return 0;
}
static uint8_t
get_depth_of_visual(xcb_screen_t *screen,
xcb_visualid_t id)
{
xcb_depth_iterator_t i;
xcb_visualtype_iterator_t j;
for (i = xcb_screen_allowed_depths_iterator(screen);
i.rem;
xcb_depth_next(&i)) {
for (j = xcb_depth_visuals_iterator(i.data);
j.rem;
xcb_visualtype_next(&j)) {
if (j.data->visual_id == id)
return i.data->depth;
}
}
return 0;
}
static int
x11_output_init_shm(struct x11_backend *b, struct x11_output *output,
int width, int height)
{
xcb_visualtype_t *visual_type;
xcb_screen_t *screen;
xcb_format_iterator_t fmt;
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
const xcb_query_extension_reply_t *ext;
int bitsperpixel = 0;
pixman_format_code_t pixman_format;
/* Check if SHM is available */
ext = xcb_get_extension_data(b->conn, &xcb_shm_id);
if (ext == NULL || !ext->present) {
/* SHM is missing */
weston_log("SHM extension is not available\n");
errno = ENOENT;
return -1;
}
screen = x11_compositor_get_default_screen(b);
visual_type = find_visual_by_id(screen, screen->root_visual);
if (!visual_type) {
weston_log("Failed to lookup visual for root window\n");
errno = ENOENT;
return -1;
}
weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
visual_type->bits_per_rgb_value,
visual_type->red_mask,
visual_type->green_mask,
visual_type->blue_mask);
output->depth = get_depth_of_visual(screen, screen->root_visual);
weston_log("Visual depth is %d\n", output->depth);
for (fmt = xcb_setup_pixmap_formats_iterator(xcb_get_setup(b->conn));
fmt.rem;
xcb_format_next(&fmt)) {
if (fmt.data->depth == output->depth) {
bitsperpixel = fmt.data->bits_per_pixel;
break;
}
}
weston_log("Found format for depth %d, bpp: %d\n",
output->depth, bitsperpixel);
if (bitsperpixel == 32 &&
visual_type->red_mask == 0xff0000 &&
visual_type->green_mask == 0x00ff00 &&
visual_type->blue_mask == 0x0000ff) {
weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
pixman_format = PIXMAN_x8r8g8b8;
} else if (bitsperpixel == 16 &&
visual_type->red_mask == 0x00f800 &&
visual_type->green_mask == 0x0007e0 &&
visual_type->blue_mask == 0x00001f) {
weston_log("Will use r5g6b5 format for SHM surfaces\n");
pixman_format = PIXMAN_r5g6b5;
} else {
weston_log("Can't find appropriate format for SHM pixmap\n");
errno = ENOTSUP;
return -1;
}
/* Create SHM segment and attach it */
output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
if (output->shm_id == -1) {
weston_log("x11shm: failed to allocate SHM segment\n");
return -1;
}
output->buf = shmat(output->shm_id, NULL, 0 /* read/write */);
if (-1 == (long)output->buf) {
weston_log("x11shm: failed to attach SHM segment\n");
return -1;
}
output->segment = xcb_generate_id(b->conn);
cookie = xcb_shm_attach_checked(b->conn, output->segment, output->shm_id, 1);
err = xcb_request_check(b->conn, cookie);
if (err) {
weston_log("x11shm: xcb_shm_attach error %d, op code %d, resource id %d\n",
err->error_code, err->major_code, err->minor_code);
free(err);
return -1;
}
shmctl(output->shm_id, IPC_RMID, NULL);
/* Now create pixman image */
output->hw_surface = pixman_image_create_bits(pixman_format, width, height, output->buf,
width * (bitsperpixel / 8));
output->gc = xcb_generate_id(b->conn);
xcb_create_gc(b->conn, output->gc, output->window, 0, NULL);
return 0;
}
static int
x11_output_switch_mode(struct weston_output *base, struct weston_mode *mode)
{
struct x11_backend *b;
struct x11_output *output;
static uint32_t values[2];
int ret;
if (base == NULL) {
weston_log("output is NULL.\n");
return -1;
}
if (mode == NULL) {
weston_log("mode is NULL.\n");
return -1;
}
b = to_x11_backend(base->compositor);
output = to_x11_output(base);
if (mode->width == output->mode.width &&
mode->height == output->mode.height)
return 0;
if (mode->width < WINDOW_MIN_WIDTH || mode->width > WINDOW_MAX_WIDTH)
return -1;
if (mode->height < WINDOW_MIN_HEIGHT || mode->height > WINDOW_MAX_HEIGHT)
return -1;
/* xcb_configure_window will create an event, and we could end up
being called twice */
output->resize_pending = true;
/* window could've been resized by the user, so don't do it twice */
if (!output->window_resized) {
values[0] = mode->width;
values[1] = mode->height;
xcb_configure_window(b->conn, output->window, XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT, values);
}
output->mode.width = mode->width;
output->mode.height = mode->height;
if (b->use_pixman) {
pixman_renderer_output_destroy(&output->base);
x11_output_deinit_shm(b, output);
if (x11_output_init_shm(b, output,
output->base.current_mode->width,
output->base.current_mode->height) < 0) {
weston_log("Failed to initialize SHM for the X11 output\n");
return -1;
}
if (pixman_renderer_output_create(&output->base,
PIXMAN_RENDERER_OUTPUT_USE_SHADOW) < 0) {
weston_log("Failed to create pixman renderer for output\n");
x11_output_deinit_shm(b, output);
return -1;
}
} else {
Window xid = (Window) output->window;
gl_renderer->output_destroy(&output->base);
ret = gl_renderer->output_window_create(&output->base,
(EGLNativeWindowType) output->window,
&xid,
gl_renderer->opaque_attribs,
NULL,
0);
if (ret < 0)
return -1;
}
output->resize_pending = false;
output->window_resized = false;
return 0;
}
static int
x11_output_disable(struct weston_output *base)
{
struct x11_output *output = to_x11_output(base);
struct x11_backend *backend = to_x11_backend(base->compositor);
if (!output->base.enabled)
return 0;
wl_event_source_remove(output->finish_frame_timer);
if (backend->use_pixman) {
pixman_renderer_output_destroy(&output->base);
x11_output_deinit_shm(backend, output);
} else {
gl_renderer->output_destroy(&output->base);
}
xcb_destroy_window(backend->conn, output->window);
xcb_flush(backend->conn);
return 0;
}
static void
x11_output_destroy(struct weston_output *base)
{
struct x11_output *output = to_x11_output(base);
x11_output_disable(&output->base);
weston_output_release(&output->base);
free(output);
}
static int
x11_output_enable(struct weston_output *base)
{
struct x11_output *output = to_x11_output(base);
struct x11_backend *b = to_x11_backend(base->compositor);
static const char name[] = "Weston Compositor";
static const char class[] = "weston-1\0Weston Compositor";
char *title = NULL;
xcb_screen_t *screen;
struct wm_normal_hints normal_hints;
struct wl_event_loop *loop;
char *icon_filename;
int ret;
uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
xcb_atom_t atom_list[1];
uint32_t values[2] = {
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY,
0
};
if (!b->no_input)
values[0] |=
XCB_EVENT_MASK_KEY_PRESS |
XCB_EVENT_MASK_KEY_RELEASE |
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_POINTER_MOTION |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW |
XCB_EVENT_MASK_KEYMAP_STATE |
XCB_EVENT_MASK_FOCUS_CHANGE;
values[1] = b->null_cursor;
output->window = xcb_generate_id(b->conn);
screen = x11_compositor_get_default_screen(b);
xcb_create_window(b->conn,
XCB_COPY_FROM_PARENT,
output->window,
screen->root,
0, 0,
output->base.current_mode->width,
output->base.current_mode->height,
0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
screen->root_visual,
mask, values);
if (b->fullscreen) {
atom_list[0] = b->atom.net_wm_state_fullscreen;
xcb_change_property(b->conn, XCB_PROP_MODE_REPLACE,
output->window,
b->atom.net_wm_state,
XCB_ATOM_ATOM, 32,
ARRAY_LENGTH(atom_list), atom_list);
} else {
memset(&normal_hints, 0, sizeof normal_hints);
normal_hints.flags =
WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
normal_hints.min_width = WINDOW_MIN_WIDTH;
normal_hints.min_height = WINDOW_MIN_HEIGHT;
normal_hints.max_width = WINDOW_MAX_WIDTH;
normal_hints.max_height = WINDOW_MAX_HEIGHT;
xcb_change_property(b->conn, XCB_PROP_MODE_REPLACE, output->window,
b->atom.wm_normal_hints,
b->atom.wm_size_hints, 32,
sizeof normal_hints / 4,
(uint8_t *) &normal_hints);
}
/* Set window name. Don't bother with non-EWMH WMs. */
if (output->base.name) {
if (asprintf(&title, "%s - %s", name, output->base.name) < 0)
title = NULL;
} else {
title = strdup(name);
}
if (title) {
xcb_change_property(b->conn, XCB_PROP_MODE_REPLACE, output->window,
b->atom.net_wm_name, b->atom.utf8_string, 8,
strlen(title), title);
free(title);
} else {
goto err;
}
xcb_change_property(b->conn, XCB_PROP_MODE_REPLACE, output->window,
b->atom.wm_class, b->atom.string, 8,
sizeof class, class);
icon_filename = file_name_with_datadir("wayland.png");
x11_output_set_icon(b, output, icon_filename);
free(icon_filename);
x11_output_set_wm_protocols(b, output);
xcb_map_window(b->conn, output->window);
if (b->fullscreen)
x11_output_wait_for_map(b, output);
if (b->use_pixman) {
if (x11_output_init_shm(b, output,
output->base.current_mode->width,
output->base.current_mode->height) < 0) {
weston_log("Failed to initialize SHM for the X11 output\n");
goto err;
}
if (pixman_renderer_output_create(&output->base,
PIXMAN_RENDERER_OUTPUT_USE_SHADOW) < 0) {
weston_log("Failed to create pixman renderer for output\n");
x11_output_deinit_shm(b, output);
goto err;
}
output->base.repaint = x11_output_repaint_shm;
} else {
/* eglCreatePlatformWindowSurfaceEXT takes a Window*
* but eglCreateWindowSurface takes a Window. */
Window xid = (Window) output->window;
ret = gl_renderer->output_window_create(
&output->base,
(EGLNativeWindowType) output->window,
&xid,
gl_renderer->opaque_attribs,
NULL,
0);
if (ret < 0)
goto err;
output->base.repaint = x11_output_repaint_gl;
}
output->base.start_repaint_loop = x11_output_start_repaint_loop;
output->base.assign_planes = NULL;
output->base.set_backlight = NULL;
output->base.set_dpms = NULL;
output->base.switch_mode = x11_output_switch_mode;
loop = wl_display_get_event_loop(b->compositor->wl_display);
output->finish_frame_timer =
wl_event_loop_add_timer(loop, finish_frame_handler, output);
weston_log("x11 output %dx%d, window id %d\n",
output->base.current_mode->width,
output->base.current_mode->height,
output->window);
return 0;
err:
xcb_destroy_window(b->conn, output->window);
xcb_flush(b->conn);
return -1;
}
static int
x11_output_set_size(struct weston_output *base, int width, int height)
{
struct x11_output *output = to_x11_output(base);
struct x11_backend *b = to_x11_backend(base->compositor);
struct weston_head *head;
xcb_screen_t *scrn = b->screen;
int output_width, output_height;
/* We can only be called once. */
assert(!output->base.current_mode);
/* Make sure we have scale set. */
assert(output->base.scale);
if (width < WINDOW_MIN_WIDTH) {
weston_log("Invalid width \"%d\" for output %s\n",
width, output->base.name);
return -1;
}
if (height < WINDOW_MIN_HEIGHT) {
weston_log("Invalid height \"%d\" for output %s\n",
height, output->base.name);
return -1;
}
wl_list_for_each(head, &output->base.head_list, output_link) {
weston_head_set_monitor_strings(head, "weston-X11", "none", NULL);
weston_head_set_physical_size(head,
width * scrn->width_in_millimeters / scrn->width_in_pixels,
height * scrn->height_in_millimeters / scrn->height_in_pixels);
}
output_width = width * output->base.scale;
output_height = height * output->base.scale;
output->mode.flags =
WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
output->mode.width = output_width;
output->mode.height = output_height;
output->mode.refresh = 60000;
output->native = output->mode;
output->scale = output->base.scale;
wl_list_insert(&output->base.mode_list, &output->mode.link);
output->base.current_mode = &output->mode;
output->base.native_mode = &output->native;
output->base.native_scale = output->base.scale;
return 0;
}
static struct weston_output *
x11_output_create(struct weston_compositor *compositor, const char *name)
{
struct x11_output *output;
/* name can't be NULL. */
assert(name);
output = zalloc(sizeof *output);
if (!output)
return NULL;
weston_output_init(&output->base, compositor, name);
output->base.destroy = x11_output_destroy;
output->base.disable = x11_output_disable;
output->base.enable = x11_output_enable;
output->base.attach_head = NULL;
weston_compositor_add_pending_output(&output->base, compositor);
return &output->base;
}
static int
x11_head_create(struct weston_compositor *compositor, const char *name)
{
struct x11_head *head;
assert(name);
head = zalloc(sizeof *head);
if (!head)
return -1;
weston_head_init(&head->base, name);
weston_head_set_connection_status(&head->base, true);
weston_compositor_add_head(compositor, &head->base);
return 0;
}
static void
x11_head_destroy(struct x11_head *head)
{
weston_head_release(&head->base);
free(head);
}
static struct x11_output *
x11_backend_find_output(struct x11_backend *b, xcb_window_t window)
{
struct x11_output *output;
wl_list_for_each(output, &b->compositor->output_list, base.link) {
if (output->window == window)
return output;
}
return NULL;
}
static void
x11_backend_delete_window(struct x11_backend *b, xcb_window_t window)
{
struct x11_output *output;
output = x11_backend_find_output(b, window);
if (output)
x11_output_destroy(&output->base);
if (wl_list_empty(&b->compositor->output_list))
weston_compositor_exit(b->compositor);
}
static void delete_cb(void *data)
{
struct window_delete_data *wd = data;
x11_backend_delete_window(wd->backend, wd->window);
free(wd);
}
#ifdef HAVE_XCB_XKB
static void
update_xkb_state(struct x11_backend *b, xcb_xkb_state_notify_event_t *state)
{
struct weston_keyboard *keyboard =
weston_seat_get_keyboard(&b->core_seat);
xkb_state_update_mask(keyboard->xkb_state.state,
get_xkb_mod_mask(b, state->baseMods),
get_xkb_mod_mask(b, state->latchedMods),
get_xkb_mod_mask(b, state->lockedMods),
0,
0,
state->group);
notify_modifiers(&b->core_seat,
wl_display_next_serial(b->compositor->wl_display));
}
#endif
/**
* This is monumentally unpleasant. If we don't have XCB-XKB bindings,
* the best we can do (given that XCB also lacks XI2 support), is to take
* the state from the core key events. Unfortunately that only gives us
* the effective (i.e. union of depressed/latched/locked) state, and we
* need the granularity.
*
* So we still update the state with every key event we see, but also use
* the state field from X11 events as a mask so we don't get any stuck
* modifiers.
*/
static void
update_xkb_state_from_core(struct x11_backend *b, uint16_t x11_mask)
{
uint32_t mask = get_xkb_mod_mask(b, x11_mask);
struct weston_keyboard *keyboard
= weston_seat_get_keyboard(&b->core_seat);
xkb_state_update_mask(keyboard->xkb_state.state,
keyboard->modifiers.mods_depressed & mask,
keyboard->modifiers.mods_latched & mask,
keyboard->modifiers.mods_locked & mask,
0,
0,
(x11_mask >> 13) & 3);
notify_modifiers(&b->core_seat,
wl_display_next_serial(b->compositor->wl_display));
}
static void
x11_backend_deliver_button_event(struct x11_backend *b,
xcb_generic_event_t *event)
{
xcb_button_press_event_t *button_event =
(xcb_button_press_event_t *) event;
uint32_t button;
struct x11_output *output;
struct weston_pointer_axis_event weston_event;
bool is_button_pressed = event->response_type == XCB_BUTTON_PRESS;
struct timespec time = { 0 };
assert(event->response_type == XCB_BUTTON_PRESS ||
event->response_type == XCB_BUTTON_RELEASE);
output = x11_backend_find_output(b, button_event->event);
if (!output)
return;
if (is_button_pressed)
xcb_grab_pointer(b->conn, 0, output->window,
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_POINTER_MOTION |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW,
XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC,
output->window, XCB_CURSOR_NONE,
button_event->time);
else
xcb_ungrab_pointer(b->conn, button_event->time);
if (!b->has_xkb)
update_xkb_state_from_core(b, button_event->state);
switch (button_event->detail) {
case 1:
button = BTN_LEFT;
break;
case 2:
button = BTN_MIDDLE;
break;
case 3:
button = BTN_RIGHT;
break;
case 4:
/* Axis are measured in pixels, but the xcb events are discrete
* steps. Therefore move the axis by some pixels every step. */
if (is_button_pressed) {
weston_event.value = -DEFAULT_AXIS_STEP_DISTANCE;
weston_event.discrete = -1;
weston_event.has_discrete = true;
weston_event.axis =
WL_POINTER_AXIS_VERTICAL_SCROLL;
weston_compositor_get_time(&time);
notify_axis(&b->core_seat, &time, &weston_event);
notify_pointer_frame(&b->core_seat);
}
return;
case 5:
if (is_button_pressed) {
weston_event.value = DEFAULT_AXIS_STEP_DISTANCE;
weston_event.discrete = 1;
weston_event.has_discrete = true;
weston_event.axis =
WL_POINTER_AXIS_VERTICAL_SCROLL;
weston_compositor_get_time(&time);
notify_axis(&b->core_seat, &time, &weston_event);
notify_pointer_frame(&b->core_seat);
}
return;
case 6:
if (is_button_pressed) {
weston_event.value = -DEFAULT_AXIS_STEP_DISTANCE;
weston_event.discrete = -1;
weston_event.has_discrete = true;
weston_event.axis =
WL_POINTER_AXIS_HORIZONTAL_SCROLL;
weston_compositor_get_time(&time);
notify_axis(&b->core_seat, &time, &weston_event);
notify_pointer_frame(&b->core_seat);
}
return;
case 7:
if (is_button_pressed) {
weston_event.value = DEFAULT_AXIS_STEP_DISTANCE;
weston_event.discrete = 1;
weston_event.has_discrete = true;
weston_event.axis =
WL_POINTER_AXIS_HORIZONTAL_SCROLL;
weston_compositor_get_time(&time);
notify_axis(&b->core_seat, &time, &weston_event);
notify_pointer_frame(&b->core_seat);
}
return;
default:
button = button_event->detail + BTN_SIDE - 8;
break;
}
weston_compositor_get_time(&time);
notify_button(&b->core_seat, &time, button,
is_button_pressed ? WL_POINTER_BUTTON_STATE_PRESSED :
WL_POINTER_BUTTON_STATE_RELEASED);
notify_pointer_frame(&b->core_seat);
}
static void
x11_backend_deliver_motion_event(struct x11_backend *b,
xcb_generic_event_t *event)
{
struct x11_output *output;
double x, y;
struct weston_pointer_motion_event motion_event = { 0 };
xcb_motion_notify_event_t *motion_notify =
(xcb_motion_notify_event_t *) event;
struct timespec time;
if (!b->has_xkb)
update_xkb_state_from_core(b, motion_notify->state);
output = x11_backend_find_output(b, motion_notify->event);
if (!output)
return;
weston_output_transform_coordinate(&output->base,
motion_notify->event_x,
motion_notify->event_y,
&x, &y);
motion_event = (struct weston_pointer_motion_event) {
.mask = WESTON_POINTER_MOTION_REL,
.dx = x - b->prev_x,
.dy = y - b->prev_y
};
weston_compositor_get_time(&time);
notify_motion(&b->core_seat, &time, &motion_event);
notify_pointer_frame(&b->core_seat);
b->prev_x = x;
b->prev_y = y;
}
static void
x11_backend_deliver_enter_event(struct x11_backend *b,
xcb_generic_event_t *event)
{
struct x11_output *output;
double x, y;
xcb_enter_notify_event_t *enter_notify =
(xcb_enter_notify_event_t *) event;
if (enter_notify->state >= Button1Mask)
return;
if (!b->has_xkb)
update_xkb_state_from_core(b, enter_notify->state);
output = x11_backend_find_output(b, enter_notify->event);
if (!output)
return;
weston_output_transform_coordinate(&output->base,
enter_notify->event_x,
enter_notify->event_y, &x, &y);
notify_pointer_focus(&b->core_seat, &output->base, x, y);
b->prev_x = x;
b->prev_y = y;
}
static int
x11_backend_next_event(struct x11_backend *b,
xcb_generic_event_t **event, uint32_t mask)
{
if (mask & WL_EVENT_READABLE)
*event = xcb_poll_for_event(b->conn);
else
*event = xcb_poll_for_queued_event(b->conn);
return *event != NULL;
}
static int
x11_backend_handle_event(int fd, uint32_t mask, void *data)
{
struct x11_backend *b = data;
struct x11_output *output;
xcb_generic_event_t *event, *prev;
xcb_client_message_event_t *client_message;
xcb_enter_notify_event_t *enter_notify;
xcb_key_press_event_t *key_press, *key_release;
xcb_keymap_notify_event_t *keymap_notify;
xcb_focus_in_event_t *focus_in;
xcb_expose_event_t *expose;
xcb_configure_notify_event_t *configure;
xcb_atom_t atom;
xcb_window_t window;
uint32_t *k;
uint32_t i, set;
uint8_t response_type;
int count;
struct timespec time;
prev = NULL;
count = 0;
while (x11_backend_next_event(b, &event, mask)) {
response_type = event->response_type & ~0x80;
switch (prev ? prev->response_type & ~0x80 : 0x80) {
case XCB_KEY_RELEASE:
/* Suppress key repeat events; this is only used if we
* don't have XCB XKB support. */
key_release = (xcb_key_press_event_t *) prev;
key_press = (xcb_key_press_event_t *) event;
if (response_type == XCB_KEY_PRESS &&
key_release->time == key_press->time &&
key_release->detail == key_press->detail) {
/* Don't deliver the held key release
* event or the new key press event. */
free(event);
free(prev);
prev = NULL;
continue;
} else {
/* Deliver the held key release now
* and fall through and handle the new
* event below. */
update_xkb_state_from_core(b, key_release->state);
weston_compositor_get_time(&time);
notify_key(&b->core_seat,
&time,
key_release->detail - 8,
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_AUTOMATIC);
free(prev);
prev = NULL;
break;
}
case XCB_FOCUS_IN:
assert(response_type == XCB_KEYMAP_NOTIFY);
keymap_notify = (xcb_keymap_notify_event_t *) event;
b->keys.size = 0;
for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
set = keymap_notify->keys[i >> 3] &
(1 << (i & 7));
if (set) {
k = wl_array_add(&b->keys, sizeof *k);
*k = i;
}
}
/* Unfortunately the state only comes with the enter
* event, rather than with the focus event. I'm not
* sure of the exact semantics around it and whether
* we can ensure that we get both? */
notify_keyboard_focus_in(&b->core_seat, &b->keys,
STATE_UPDATE_AUTOMATIC);
free(prev);
prev = NULL;
break;
default:
/* No previous event held */
break;
}
switch (response_type) {
case XCB_KEY_PRESS:
key_press = (xcb_key_press_event_t *) event;
if (!b->has_xkb)
update_xkb_state_from_core(b, key_press->state);
weston_compositor_get_time(&time);
notify_key(&b->core_seat,
&time,
key_press->detail - 8,
WL_KEYBOARD_KEY_STATE_PRESSED,
b->has_xkb ? STATE_UPDATE_NONE :
STATE_UPDATE_AUTOMATIC);
break;
case XCB_KEY_RELEASE:
/* If we don't have XKB, we need to use the lame
* autorepeat detection above. */
if (!b->has_xkb) {
prev = event;
break;
}
key_release = (xcb_key_press_event_t *) event;
weston_compositor_get_time(&time);
notify_key(&b->core_seat,
&time,
key_release->detail - 8,
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_NONE);
break;
case XCB_BUTTON_PRESS:
case XCB_BUTTON_RELEASE:
x11_backend_deliver_button_event(b, event);
break;
case XCB_MOTION_NOTIFY:
x11_backend_deliver_motion_event(b, event);
break;
case XCB_EXPOSE:
expose = (xcb_expose_event_t *) event;
output = x11_backend_find_output(b, expose->window);
if (!output)
break;
weston_output_damage(&output->base);
weston_output_schedule_repaint(&output->base);
break;
case XCB_ENTER_NOTIFY:
x11_backend_deliver_enter_event(b, event);
break;
case XCB_LEAVE_NOTIFY:
enter_notify = (xcb_enter_notify_event_t *) event;
if (enter_notify->state >= Button1Mask)
break;
if (!b->has_xkb)
update_xkb_state_from_core(b, enter_notify->state);
notify_pointer_focus(&b->core_seat, NULL, 0, 0);
break;
case XCB_CLIENT_MESSAGE:
client_message = (xcb_client_message_event_t *) event;
atom = client_message->data.data32[0];
window = client_message->window;
if (atom == b->atom.wm_delete_window) {
struct wl_event_loop *loop;
struct window_delete_data *data = malloc(sizeof *data);
/* if malloc failed we should at least try to
* delete the window, even if it may result in
* a crash.
*/
if (!data) {
x11_backend_delete_window(b, window);
break;
}
data->backend = b;
data->window = window;
loop = wl_display_get_event_loop(b->compositor->wl_display);
wl_event_loop_add_idle(loop, delete_cb, data);
}
break;
case XCB_CONFIGURE_NOTIFY:
configure = (struct xcb_configure_notify_event_t *) event;
struct x11_output *output =
x11_backend_find_output(b, configure->window);
if (!output || output->resize_pending)
break;
struct weston_mode mode = output->mode;
if (mode.width == configure->width &&
mode.height == configure->height)
break;
output->window_resized = true;
mode.width = configure->width;
mode.height = configure->height;
if (weston_output_mode_set_native(&output->base,
&mode, output->scale) < 0)
weston_log("Mode switch failed\n");
break;
case XCB_FOCUS_IN:
focus_in = (xcb_focus_in_event_t *) event;
if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
break;
prev = event;
break;
case XCB_FOCUS_OUT:
focus_in = (xcb_focus_in_event_t *) event;
if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
break;
notify_keyboard_focus_out(&b->core_seat);
break;
default:
break;
}
#ifdef HAVE_XCB_XKB
if (b->has_xkb) {
if (response_type == b->xkb_event_base) {
xcb_xkb_state_notify_event_t *state =
(xcb_xkb_state_notify_event_t *) event;
if (state->xkbType == XCB_XKB_STATE_NOTIFY)
update_xkb_state(b, state);
} else if (response_type == XCB_PROPERTY_NOTIFY) {
xcb_property_notify_event_t *prop_notify =
(xcb_property_notify_event_t *) event;
if (prop_notify->window == b->screen->root &&
prop_notify->atom == b->atom.xkb_names &&
prop_notify->state == XCB_PROPERTY_NEW_VALUE)
update_xkb_keymap(b);
}
}
#endif
count++;
if (prev != event)
free (event);
}
switch (prev ? prev->response_type & ~0x80 : 0x80) {
case XCB_KEY_RELEASE:
key_release = (xcb_key_press_event_t *) prev;
update_xkb_state_from_core(b, key_release->state);
weston_compositor_get_time(&time);
notify_key(&b->core_seat,
&time,
key_release->detail - 8,
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_AUTOMATIC);
free(prev);
prev = NULL;
break;
default:
break;
}
return count;
}
#define F(field) offsetof(struct x11_backend, field)
static void
x11_backend_get_resources(struct x11_backend *b)
{
static const struct { const char *name; int offset; } atoms[] = {
{ "WM_PROTOCOLS", F(atom.wm_protocols) },
{ "WM_NORMAL_HINTS", F(atom.wm_normal_hints) },
{ "WM_SIZE_HINTS", F(atom.wm_size_hints) },
{ "WM_DELETE_WINDOW", F(atom.wm_delete_window) },
{ "WM_CLASS", F(atom.wm_class) },
{ "_NET_WM_NAME", F(atom.net_wm_name) },
{ "_NET_WM_ICON", F(atom.net_wm_icon) },
{ "_NET_WM_STATE", F(atom.net_wm_state) },
{ "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
{ "_NET_SUPPORTING_WM_CHECK",
F(atom.net_supporting_wm_check) },
{ "_NET_SUPPORTED", F(atom.net_supported) },
{ "STRING", F(atom.string) },
{ "UTF8_STRING", F(atom.utf8_string) },
{ "CARDINAL", F(atom.cardinal) },
{ "_XKB_RULES_NAMES", F(atom.xkb_names) },
};
xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
xcb_intern_atom_reply_t *reply;
xcb_pixmap_t pixmap;
xcb_gc_t gc;
unsigned int i;
uint8_t data[] = { 0, 0, 0, 0 };
for (i = 0; i < ARRAY_LENGTH(atoms); i++)
cookies[i] = xcb_intern_atom (b->conn, 0,
strlen(atoms[i].name),
atoms[i].name);
for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
reply = xcb_intern_atom_reply (b->conn, cookies[i], NULL);
*(xcb_atom_t *) ((char *) b + atoms[i].offset) = reply->atom;
free(reply);
}
pixmap = xcb_generate_id(b->conn);
gc = xcb_generate_id(b->conn);
xcb_create_pixmap(b->conn, 1, pixmap, b->screen->root, 1, 1);
xcb_create_gc(b->conn, gc, pixmap, 0, NULL);
xcb_put_image(b->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
b->null_cursor = xcb_generate_id(b->conn);
xcb_create_cursor (b->conn, b->null_cursor,
pixmap, pixmap, 0, 0, 0, 0, 0, 0, 1, 1);
xcb_free_gc(b->conn, gc);
xcb_free_pixmap(b->conn, pixmap);
}
static void
x11_backend_get_wm_info(struct x11_backend *c)
{
xcb_get_property_cookie_t cookie;
xcb_get_property_reply_t *reply;
xcb_atom_t *atom;
unsigned int i;
cookie = xcb_get_property(c->conn, 0, c->screen->root,
c->atom.net_supported,
XCB_ATOM_ATOM, 0, 1024);
reply = xcb_get_property_reply(c->conn, cookie, NULL);
if (reply == NULL)
return;
atom = (xcb_atom_t *) xcb_get_property_value(reply);
for (i = 0; i < reply->value_len; i++) {
if (atom[i] == c->atom.net_wm_state_fullscreen)
c->has_net_wm_state_fullscreen = 1;
}
free(reply);
}
static void
x11_destroy(struct weston_compositor *ec)
{
struct x11_backend *backend = to_x11_backend(ec);
struct weston_head *base, *next;
wl_event_source_remove(backend->xcb_source);
x11_input_destroy(backend);
weston_compositor_shutdown(ec); /* destroys outputs, too */
wl_list_for_each_safe(base, next, &ec->head_list, compositor_link)
x11_head_destroy(to_x11_head(base));
XCloseDisplay(backend->dpy);
free(backend);
}
static int
init_gl_renderer(struct x11_backend *b)
{
int ret;
gl_renderer = weston_load_module("gl-renderer.so",
"gl_renderer_interface");
if (!gl_renderer)
return -1;
ret = gl_renderer->display_create(b->compositor, EGL_PLATFORM_X11_KHR,
(void *) b->dpy,
gl_renderer->opaque_attribs, NULL, 0);
return ret;
}
static const struct weston_windowed_output_api api = {
x11_output_set_size,
x11_head_create,
};
static struct x11_backend *
x11_backend_create(struct weston_compositor *compositor,
struct weston_x11_backend_config *config)
{
struct x11_backend *b;
struct wl_event_loop *loop;
int ret;
b = zalloc(sizeof *b);
if (b == NULL)
return NULL;
b->compositor = compositor;
b->fullscreen = config->fullscreen;
b->no_input = config->no_input;
compositor->backend = &b->base;
if (weston_compositor_set_presentation_clock_software(compositor) < 0)
goto err_free;
b->dpy = XOpenDisplay(NULL);
if (b->dpy == NULL)
goto err_free;
b->conn = XGetXCBConnection(b->dpy);
XSetEventQueueOwner(b->dpy, XCBOwnsEventQueue);
if (xcb_connection_has_error(b->conn))
goto err_xdisplay;
b->screen = x11_compositor_get_default_screen(b);
wl_array_init(&b->keys);
x11_backend_get_resources(b);
x11_backend_get_wm_info(b);
if (!b->has_net_wm_state_fullscreen && config->fullscreen) {
weston_log("Can not fullscreen without window manager support"
"(need _NET_WM_STATE_FULLSCREEN)\n");
config->fullscreen = 0;
}
b->use_pixman = config->use_pixman;
if (b->use_pixman) {
if (pixman_renderer_init(compositor) < 0) {
weston_log("Failed to initialize pixman renderer for X11 backend\n");
goto err_xdisplay;
}
}
else if (init_gl_renderer(b) < 0) {
goto err_xdisplay;
}
weston_log("Using %s renderer\n", config->use_pixman ? "pixman" : "gl");
b->base.destroy = x11_destroy;
b->base.create_output = x11_output_create;
if (x11_input_create(b, config->no_input) < 0) {
weston_log("Failed to create X11 input\n");
goto err_renderer;
}
loop = wl_display_get_event_loop(compositor->wl_display);
b->xcb_source =
wl_event_loop_add_fd(loop,
xcb_get_file_descriptor(b->conn),
WL_EVENT_READABLE,
x11_backend_handle_event, b);
wl_event_source_check(b->xcb_source);
if (compositor->renderer->import_dmabuf) {
if (linux_dmabuf_setup(compositor) < 0)
weston_log("Error: initializing dmabuf "
"support failed.\n");
}
if (compositor->capabilities & WESTON_CAP_EXPLICIT_SYNC) {
if (linux_explicit_synchronization_setup(compositor) < 0)
weston_log("Error: initializing explicit "
" synchronization support failed.\n");
}
ret = weston_plugin_api_register(compositor, WESTON_WINDOWED_OUTPUT_API_NAME,
&api, sizeof(api));
if (ret < 0) {
weston_log("Failed to register output API.\n");
goto err_x11_input;
}
return b;
err_x11_input:
x11_input_destroy(b);
err_renderer:
compositor->renderer->destroy(compositor);
err_xdisplay:
XCloseDisplay(b->dpy);
err_free:
free(b);
return NULL;
}
static void
config_init_to_defaults(struct weston_x11_backend_config *config)
{
}
WL_EXPORT int
weston_backend_init(struct weston_compositor *compositor,
struct weston_backend_config *config_base)
{
struct x11_backend *b;
struct weston_x11_backend_config config = {{ 0, }};
if (config_base == NULL ||
config_base->struct_version != WESTON_X11_BACKEND_CONFIG_VERSION ||
config_base->struct_size > sizeof(struct weston_x11_backend_config)) {
weston_log("X11 backend config structure is invalid\n");
return -1;
}
config_init_to_defaults(&config);
memcpy(&config, config_base, config_base->struct_size);
b = x11_backend_create(compositor, &config);
if (b == NULL)
return -1;
return 0;
}